Expense Example, No Redemption - Putnam Sustainable Future Fund - Class C |
Apr. 30, 2025
USD ($)
|
|---|---|
| Prospectus [Line Items] | |
| Expense Example, No Redemption, 1 Year | $ 180 |
| Expense Example, No Redemption, 3 Years | 558 |
| Expense Example, No Redemption, 5 Years | 960 |
| Expense Example, No Redemption, 10 Years | $ 1,887 |